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Finding the Fourth Proportional to 281,691.66, 422,537.39 and 68,458.45

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Solution

The fourth proportional to 281,691.66, 422,537.39 and 68,458.45 is: 102,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,691.66 : 422,537.39 = 68,458.45 : x
  2. Step 2: Convert to fraction form
    281,691.66/422,537.39 = 68,458.45/x
  3. Step 3: Cross multiply
    281,691.66x = 422,537.39 × 68,458.45
  4. Step 4: Simplify right side
    281,691.66x = 28,926,254,786.45
  5. Step 5: Solve for x
    x = 28,926,254,786.45/281,691.66
  6. Step 6: Final answer
    x = 102,687.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.